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Glossary 115
Glossary
Term Meaning
° Degrees
AAmp
AutoTrim The AutoTrim setting determines the rate at which the autopilot applies
‘standing helm’ to correct for trim changes caused by varying wind loads on
the sails or superstructure.
AWG American Wire Gauge
CE Marked on products that comply with defined European Community
standards
counter rudder Counter rudder is the amount of rudder the autopilot applies to try to prevent
the boat from yawing off course. Higher counter rudder settings result in
more rudder being applied.
DC Direct current
EMC
(Electromagnetic
Compatibility)
When powered up, all electrical equipment produces electromagnetic fields.
These can cause adjacent pieces of electrical equipment to interact with one
another, and this can degrade their performance. By following the EMC
guidelines in this handbook, you can minimize these effects by ensuring
optimum Electromagnetic Compatibility (EMC) between equipment.
Fluxgate Standard Raymarine compass supplied with ST4000+ autopilot system
ft Foot (1 ft = 305 mm)
GPS Global Positioning System
Hz Hertz (cycles per second)
in Inch (1 in = 25.4 mm)
kg Kilogram (1 kg = 2.2 lb)
km Kilometre
lb Pound (1 lb = 0.45 kg)
m Metre (1 m = 39.4 inches)
mm Millimeter (1 mm = 0.04 inches)
nm Nautical mile
Nm Newton metre
NMEA The NMEA (National Maritime Electronics Association) protocol is an
internationally accepted serial communication interface standard for
sharing data between electronic equipment. Raymarine products can share
information with non-SeaTalk equipment using the NMEA 0183 protocol.